Test Analysis and Control of Motor Whine Noise for Electric Drive
The whine noise of a rear wheel driving battery electric vehicle coasting down to about 45 km/h seriously affects the sound quality of the vehicle subjectively.By means of test analysis.it is found that the 8th order electromagnetic noise leads the whine noise.For the vibration noise source of electric drive body,the mechanism analysis of this electromagnetic noise is carried out,and interchange validation of prototype is done,it determined that the whine noise is strongly associated with motor stator.Through dimension measurement test.It is determined that the mechanism is excessive electromagnetic excitation caused by the deviation concentricity of the motor stator,the inner vehicle whine noise is improved by controlling motor stator concentricity.It provides valuable experience for noise and vibration reduction of electric drive.
electric driveelectromagnetic noisestator concentricity
万方数据
维普
